387Oral HistologyMedium
The maxillary sinus________?
AIs fully developed by the age of 8 years
BOpens in to the inferior meatus of nose
CHas good drainage in upright position
DHas the 1st molar projecting into its floor
Correct answer
D. Has the 1st molar projecting into its floor
Explanation
The correct answer is Has the 1st molar projecting into its floor.